Dentifrice compound



Patented Sept. 27, 1927.

PATENT OFFICE.

WAL THER BBUCK, OI BBESIJAU, GERMANY.

DENTIFIRICE COMPOUND.

No Drawing. Application filed June 28, 1926, Serial No. 119,201, and in Germany March 29, 1824.

i abrasive or triturating agent, such asnchalk the cleaning properties of which are increased by the presence of soap. These compounds employed by practitioners are in suflicient or not suitable at all for the purpose of dissolving or removing the so-called tartar or upon repeated use to prevent the deposition of the tartar. Various attempts have at a prevention or dissolving of the deposits of tartar which is a point of particular importance in the care of the teeth. Thus it as been suggested to employ certain salts of inorganic acids in compounding dental medicines, but the results were highly un- Q satisfactory.

Now, it has been found in the course of my experiments that the salts of the arcmatic sul honic acids particularlythe hydroxylate sulphonates, thus for instance,

the alkali salts thereof exhibit a very strong dissolving action for carbonate of lime and phosphate of lime, and for the so-called tartar of the teeth, and it has also been'ascertained that these solvents retain an absolutely sufiicient and satisfactory dissolving action with regard to the substances -men tioned even in the presence of soaps This property is of very great importance for the practitioner, and, inasmuch as the sulphonic acids employed are absolutely harmless and indifierent and do not attack the enamel of theteeth, they are highl suitable for the manufacture of compoun to dissolve and and it refers in particular to,

from the salivaand been made heretofore to arrive disintegrate the tartai-of the teeth and they may be used in the form of mouthwashes, tooth. pastes, tooth powders and the like.

The efficiency of the phenol-sul honic-acid salts on being digested for only ve minutes with CaCO at the temperature of the room may be seen from the following details Water will dissolve during this time in 100 cc.- 3.8 millgrs. CaCO i 0.9% NaCl solution dissolves during this time in 100 cc. 0.7 millgrs. c300,.

' 1% benzoate of soda dissolves during this time in 100 cc. 10.1 millgrs. CaCO 0.9% henol-sulphonate of Na dissolves during t is time in 100 .00. 15.5 millgrs. CaCO,,.

Thus, while ordinar aromatic acids are equivalent to salt NaC the efliciency of the phenol-sulphonic-acid salt even with weak concentration is stronger, and there is the further advantage, as compared with PIGVIOIIS suggestions that the mixture does not act with neutral or faintly acid reaction, which is not practicable in dentistr but that it is eflicient at a decidedly alkaline reaction (concentration index.P :7.8).

E wample. Per cent. Sapo me i 23 Glycerine l 25 Tinct. benzoic- 2.0 Alcohol 19 Abrasive (talc or the like) 21.0 Para-phenol-sulphonate of Na 10 add perfume at discretion.

The employment of aromatic sulphonic acids in such compounds is broadly novel and constitutes a very important progress in t e art.

It should, of course, be understood thatthe invention is not restricted to the particular pro ortions and ingredients, herein mentioned y way of exemplificatlon and illustration of the principles of the invention, but changes and modifications are admissible within the spirit and scope of the invention, as particularly pointed out in the appended claims.

I claim 1. As a dental compound, a composition 3 of matter, comprising a mixture of hydroxy aromatic sulpho-compounds with mechanical tooth cleaning a ents.

2. As a denta compound, acomposition of matter, comprising a mixture of an abra- 10 sixie with hydroxy aromatic sulphonic acid sa ts. T

3, As a dental compound, a composition of. matter, comprisinga mixture of an abrasive with alkali-salts of hydroxy aromatic sulphonic acids. 15

4. A dentifrice, comprising hydroxy aromatic sulphonic acid compounds.

5. A dentifrice, comprisin alkali metal salts of phenol sulphonic aci s. I

6. A dentifrice, comprising a mixture of 20 soap with an abrasive and phenol sulphonic acid compounds.

7. A dentrifrice, comprising a mixture of soap with an abrasive and alkali-salts of phenol sulphonic acids.-

' 'WALTHER BRUCK. 

